/* 关于我们 */
.us {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 900px;
    padding-left: 30px;
}
.us h2 {
    font-size: 46px;
    margin-bottom: 30px;
}
.us h2 span {
    border-bottom: 7px solid rgb(218, 218, 218);
}
.us strong {
    color: #171717;
    font-weight: 700;
}
.us p {
    line-height: 42px;
    font-size: 24px;
}
.us .group {
    position: relative;
    width: 950px;
}
.us img {
    margin-top: 42px;
    width: 100%;
    height: 100%;
}
.us .group::before {
    position: absolute;
    top: 26px;
    left: -15px;
    content: '';
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: #ffd155;
    z-index: -1;
}
.us .usLi {
    position: absolute;
    right: 0;
    bottom: 0;
}
.usLi li {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    margin-bottom: 8px;
}
.usLi .normal {
    border: 4px solid #0f9cf5;
}
.usLi .yellow {
    border: 4px solid #ffd155;
}
.usLi .blue {
    background-color: #0f9cf5;
    border: 4px solid #0f9cf5;
}